A brake consisting essentially of the following: a. A brake anchor bracket, also called a carrier assembly, which is the basic unit of the brake. It is designed to be attached to the torque flange of the axle and is also the part upon which the other components of the brake are assembled. b. A floating hydraulically actuated annular piston, or an equivalent mechanical device, used for applying braking pressure. c. Metallic disks keyed to rotate with the wheel alternated with nonrotating disks keyed to the anchor bracket. See also BRAKE, SEGMENTED ROTOR.